Is it permissible to obtain paid software and then donate its price to charity if it is not possible to pay its price to its owners?

What we understand from the question is that the questioner wants to obtain a program fraudulently without buying it; this is a forbidden transgression, and the intention to donate its price does not make this transgression permissible.

One can seek assistance from someone who deals with the website to purchase it or abandon the idea, because transgressing against it is forbidden and constitutes consuming people's wealth unjustly, as Allah Almighty says: "O you who have believed, do not consume one another's wealth unjustly but only [in lawful] business by mutual consent." And as the Prophet, peace and blessings be upon him, said: "The wealth of a Muslim person is not lawful except what he gives of his own free will."